diagnosis
noun
di·ag·no·sis
ˌdī-ig-ˈnō-səs 
-əg-
plural diagnoses
ˌdī-ig-ˈnō-ˌsēz
-əg-
1
a
: the art or act of identifying a disease from its signs and symptoms
b
: the decision reached by diagnosis
the doctor's diagnosis
2
a
: investigation or analysis of the cause or nature of a condition, situation, or problem
diagnosis of engine trouble
b
: a statement or conclusion from such an analysis
3
biology
: a concise technical description of a taxon
Examples of diagnosis in a Sentence
The unusual combination of symptoms made accurate diagnosis difficult.
She is an expert in the diagnosis and treatment of eye diseases.
The diagnosis was a mild concussion.
His doctor made an initial diagnosis of pneumonia.
The committee published its diagnosis of the problems affecting urban schools.
Recent Examples on the Web
Still, Mendoza referred to Lindor’s diagnosis as relatively good news.
—
Will Sammon, New York Times, 6 June 2025
Redstone kept her diagnosis private, sharing it with only a tight circle of relatives, close friends, and advisers including David Ellison, the Skydance head and tech heir, whose company is set to purchase Paramount and the Redstone family’s stake, NYT added.
—Reuters, NBC news, 6 June 2025
In the filing, Whitney also asked that Decker be evaluated for anger management/domestic violence, and have a full psychiatric evaluation by a licensed psychiatrist to include any potential diagnoses.
—Nicole Acosta, People.com, 6 June 2025
Biden recently revealed his diagnosis of prostate cancer.
—Bart Jansen, USA Today, 6 June 2025
See All Example Sentences for diagnosis
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Will Sammon, New York Times, 6 June 2025
Redstone kept her diagnosis private, sharing it with only a tight circle of relatives, close friends, and advisers including David Ellison, the Skydance head and tech heir, whose company is set to purchase Paramount and the Redstone family’s stake, NYT added.
—Reuters, NBC news, 6 June 2025
In the filing, Whitney also asked that Decker be evaluated for anger management/domestic violence, and have a full psychiatric evaluation by a licensed psychiatrist to include any potential diagnoses.
—Nicole Acosta, People.com, 6 June 2025
Biden recently revealed his diagnosis of prostate cancer.
—Bart Jansen, USA Today, 6 June 2025
See All Example Sentences for diagnosis
Cite this Entry
“Diagnosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diagnosis. Accessed 10 Jun. 2025.
Copy CitationKids Definition
diagnosis
noun
di·ag·no·sis
ˌdī-ig-ˈnō-səs
plural diagnoses
-ˈnō-ˌsēz
1
a
: the art or act of identifying a disease from its signs and symptoms
b
: the decision reached by diagnosis
2
a
: a careful study of something especially to determine its nature or importance
b
: the conclusion reached after a study or examination
Medical Definition
diagnosis
noun
di·ag·no·sis
ˌdī-ig-ˈnō-səs, -əg-
plural diagnoses
-ˌsēz
1
a
: the art or act of identifying a disease from its signs and symptoms
b
: the decision reached by diagnosis
a diagnosis of pneumonia
2
: a concise technical description of a taxon
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